Grate



(No Model.) 2 Sheets-Sheet 1.

' J. J. HALL.

GRATE.

Patented June 27, 1893,

(No Model.) 2 Sheets-Sheet 2.

' J. J. HALL.

GRATE. No. 500,493. Patented June 27, 1893.

UNITED STATES PATENT OFFICE.

JOSEPH JOHNSON HALL, OF WILLOW, CALIFORNIA.

GRATE.

SPECIFICATION forming part of Letters Patent No. 500,493, dated June 27,1893.

Application filed August 18, 1892.

To all whom it may concern:

Be it known that I, J OSEPH JOHNSON HALL, of Willow, 1n the county ofGlenn and State of California,have invented certain new and usefulImprovements in Grates; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention contemplates certain new anduseful improvements ingrates, all the bars of which can be readily operated in unison and heldfirmly in the position which they are made to occupy.

The invention comprises the detail construction, combination andarrangement of parts, substantially as hereinafter. fully set forth andparticularly pointed out in the claims.

In the accompanying drawings:-Figure l is a view in perspectiveillustrating my improved grate, one section of which is shown open, theother being closed. Fig. 2 is a detail perspective view of thelever-socket, parts being broken away. Fig. 3 is a similar view of thesame feature shown in a difierent position. Fig. 4 is a detail viewshowing one of the arms connected to the grate.

Referring to the drawings, A designates a grate preferably formed in twosections a, a, each section being composed of corresponding grate-bars00 Each grate-bar is of approximately semi-circular shape and has twobearing flanges a From the centers of the ends of these grate-barsproject short studs 1) which fit in recesses 19 of supporting bars 1)extended longitudinally the length of the stove. By thus making thegrate-bars with double bearing faces they are capable of double use,that is, if one face should become worn or injured, the other face canstill be used. In thus making the grate-bars no additional material isrequired, since the metal now used for strengthening a single facedgrate-bar is made to form the additional face in my grate-bar.

To the under side of each bar is secured the upper end of an arm B, thesame being attached to such bar beneath the face in use in forming thegrate by screws passed through holes 17*. At their lower ends these armsare loosely connected by bolts 0 to a sliding bar Serial No. 443,409-(No model.)

D. To this latter is connected an operating rod (1, which near itsforward end is bent or curved upward and projected through a hole oropening d in the front wall of the stove or furnace. By thus bending orcurving the operating rod it is not necessary to form a slot in saidwall, and hence the annoyance of additional draft is avoided.

E is a lever socket which is provided with two corresponding ears ebetween which fits an arm 6' rigidly attached to the front wall of thestove. I A pivot pin 6 is passed through coincident holes in said earsand arm. At its lower end this lever-socket is pivotally connected by abolt 6 to the outer end of the operating rod. Within lever socket E is acam F mounted on a pivot pin f, and havingvtwo corresponding front teethor shoulders f, f and a third upper tooth f This latter tooth hasrigidly secured thereto a short arm or looking platef, which when thecam is in its normal position is projected into a slot f in the end ofarm 6.

G is the operating lever rod provided in one side near its end with aslot or opening g. This le-ver rod is inserted down into the leversocket and will'strike against the lower shoulder f of cam F and effectthe turning thereof and the removal of locking plate f from engagementwith arm 6, which will permit the lever socket to turn on its pivot pin6 and effect the inward movement of the operating rod. At the same timethat the cam is turned to effect the unlocking of plate f the tooth orshoulder f enters slot or opening 9 of the lever rod and hence locks thelatter therein, and it is impossible to remove the lever rod withoutreturning the grate bars to their normal position. Hence it will be seenthat by inserting the lever rod in the lever socket, the latter isunlocked and when turned will effect the turning of the grate-bars intoa vertical position, and thus dump the contents of the grate. In orderto remove the lever-rod the grate bars are of necessity returned totheir normal position. In this way all danger of the bars being left ina vertical position is avoided.

The advantages of my invention are apparent to those skilled in the artto which it appertains.

A grate thus constructed is simple and inexpensive, strong and durableand not liable to readily get out of order.

I claim as my invention 1. The herein-described improved grate,comprising a series of pivoted grate-bars, an operating rod therefor, alever socket,"a stationary arm .pivotally supporting the same a cam insaid lever socket carrying a locking plate designed to engage said arm,and the lever rod for operating said cam, which latter will hold saidlever rod in said lever socket when the latter is out of its normalposition, as set forth.

2. The herein-described improved grate, comprising a series of pivotalgrate-bars, an operating rod therefor, a lever socket connected to saidrod, a stationary arm supporting said leversocket and having a slot inits end, the cam pivotally mounted in said leversocket and having teethor shoulders, a looking plate carried by said cam and designed to entersaid slot, and the lever rod having a slot designed to move said cam andbe held by one of said teeth entering said slot, substantially as setforth.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

JOSEPH JOHNSON HALL.

Witnesses:

W. K. DOBSON, J. N. WATERS.

